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Simultaneous equations by elimination
19 questions
Lesson
Not started
Mark as done
Solve the simultaneous equations
x
+
y
=
10
\quad x + y = 10 \quad
x
+
y
=
10
and
x
−
y
=
4
\quad x - y = 4
x
−
y
=
4
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Level 1
2 marks
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→
Mark as done
Solve the simultaneous equations
2
x
+
y
=
11
\quad 2x + y = 11 \quad
2
x
+
y
=
11
and
x
+
y
=
7
\quad x + y = 7
x
+
y
=
7
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Level 1
2 marks
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Substitution and real-world simultaneous equations
18 questions
Lesson
Not started
Mark as done
y
=
2
x
y = 2x
y
=
2
x
and
x
+
y
=
12
x + y = 12
x
+
y
=
12
. Find
x
x
x
and
y
y
y
.
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Level 1
2 marks
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→
Mark as done
y
=
x
+
3
y = x + 3
y
=
x
+
3
and
x
+
y
=
11
x + y = 11
x
+
y
=
11
. Find the value of
y
y
y
.
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Level 1
2 marks
Start
→
Mark as done
3
x
+
y
=
14
3x + y = 14
3
x
+
y
=
14
and
y
=
2
y = 2
y
=
2
. Find
x
x
x
.
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Level 1
1 mark
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